feat: replace Kaggle CSV with Wikipedia scraper for historical match data

Add scripts/scrape-wikipedia.ts that fetches all 22 World Cups (1930–2022)
from English Wikipedia via MediaWiki API, handles group sub-pages, AET/penalty
detection, and goal parsing, writing openfootball-format JSON to app/data/openfootball/.

Rewrite scripts/seed.ts to read these local JSON files instead of the Kaggle
CSV, producing 965 matches and 2716 goals with per-group assignments for all
historical tournaments (enabling group standings on tournament pages).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/data/openfootball/1954/worldcup.stadiums.json

@@ -0,0 +1,28 @@
+{
+  "stadiums": [
+    {
+      "name": "Charmilles Stadium",
+      "city": "Geneva"
+    },
+    {
+      "name": "Stade Olympique de la Pontaise",
+      "city": "Lausanne"
+    },
+    {
+      "name": "Wankdorf Stadium",
+      "city": "Bern"
+    },
+    {
+      "name": "Hardturm Stadium",
+      "city": "Zürich"
+    },
+    {
+      "name": "St. Jakob Stadium",
+      "city": "Basel"
+    },
+    {
+      "name": "Cornaredo Stadium",
+      "city": "Lugano"
+    }
+  ]
+}